SCHEMES OF FINITE ELEMENT METHOD FOR SOLVING MULTIDIMENSIONAL BOUNDARY VALUE PROBLEMS ArticleBatgerel Balt, Vinitsky S.I., Chuluunbaatar Ochbadrakh, Buša Jan, Blinkov Y.A., Gusev A.A., Deveikis Algirdas, Chuluunbaatar Galmandakh, Ulziibayar VandandooJournal of Mathematical Sciences. Том 279. 2024. С. 738-755